ZA876668B - Spring brake actuator - Google Patents
Spring brake actuatorInfo
- Publication number
- ZA876668B ZA876668B ZA876668A ZA876668A ZA876668B ZA 876668 B ZA876668 B ZA 876668B ZA 876668 A ZA876668 A ZA 876668A ZA 876668 A ZA876668 A ZA 876668A ZA 876668 B ZA876668 B ZA 876668B
- Authority
- ZA
- South Africa
- Prior art keywords
- piston rod
- piston
- yoke
- ring
- grooves
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/16—Locking of brake cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/085—Spring loaded brake actuators
- B60T17/086—Spring loaded brake actuators with emergency release device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/083—Combination of service brake actuators with spring loaded brake actuators
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
A device for discontinuing and automatically restoring the operational function of a spring brake actuator comprises a piston (9) with a piston rod (10) and a spring (13) actuating the piston and piston rod in a working direction for brake application at falling brake fluid pressure on the piston, a slitted, resilient locking ring (15) being arranged in grooves (16, 17) facing each other in the piston rod and a piston rod sleeve (14) coaxial therewith. The locking ring can either be constrained to rest in both of the grooves, so that the piston rod and piston rod sleeve are locked together, or be free to be forced completely into one of the grooves, which is at least as deep as the thickness of the ring, so that the piston rod and piston rod sleeve are free to move independently of each other. In a compartment (20) in a piston rod flange (10') are arranged a movable locking yoke (21), which can engage heads (15') at the respective ends of the ring for keeping them together, and a locking cube (22), which is movable by a control rod (23) substantially perpendicularly to the yoke and will lock the yoke in said engaging condition when placed above the yoke.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8603745A SE454428B (en) | 1986-09-08 | 1986-09-08 | LOADING DEVICE IN SPRING BRAKE ACTUATOR TO CANCEL AND AUTOMATICALLY RETURN THE WORK FUNCTION |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA876668B true ZA876668B (en) | 1988-03-07 |
Family
ID=20365510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA876668A ZA876668B (en) | 1986-09-08 | 1987-09-07 | Spring brake actuator |
Country Status (18)
Country | Link |
---|---|
US (1) | US4777867A (en) |
EP (1) | EP0259924B1 (en) |
JP (1) | JPH086771B2 (en) |
KR (1) | KR960005844B1 (en) |
CN (1) | CN1010470B (en) |
AT (1) | ATE51593T1 (en) |
AU (1) | AU585171B2 (en) |
BR (1) | BR8704619A (en) |
CA (1) | CA1301082C (en) |
CS (1) | CS274565B2 (en) |
DE (1) | DE3762112D1 (en) |
ES (1) | ES2014021B3 (en) |
HU (1) | HU199736B (en) |
IN (1) | IN169586B (en) |
SE (1) | SE454428B (en) |
SU (1) | SU1508954A3 (en) |
YU (1) | YU46877B (en) |
ZA (1) | ZA876668B (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5193431A (en) * | 1989-11-03 | 1993-03-16 | Parker-Hannifin Corporation | Device for operation of a sliding door member |
US5115176A (en) * | 1990-10-22 | 1992-05-19 | White Dewitt T | Control arrangement for electrically propelled wheeled vehicles |
IT1241352B (en) * | 1990-12-13 | 1994-01-10 | Bendix Heavy Vehicle Syst | BRAKING ELEMENT FOR PNEUMATIC BRAKING SYSTEMS |
SE510583C2 (en) * | 1994-10-24 | 1999-06-07 | Sab Wabco Ab | Safety brake arrangement in a brake actuator |
DE19512997C1 (en) * | 1995-04-06 | 1996-11-07 | Knorr Bremse Systeme | Actuating device for braking devices of rail vehicles |
US5937974A (en) | 1997-05-02 | 1999-08-17 | Westinghouse Air Brake Company | Spring applied parking brake actuator having a collet style slack adjuster |
US5848550A (en) * | 1997-05-02 | 1998-12-15 | Westinghouse Air Brake Company | Parking brake manual release mechanism |
US6702072B2 (en) * | 2002-04-18 | 2004-03-09 | Westinghouse Air Brake Technologies Corporation | Brake cylinder unit |
SE523553C2 (en) * | 2002-07-04 | 2004-04-27 | Haldex Brake Prod Ab | Fluid-activated parking brake |
US7140477B2 (en) * | 2003-09-09 | 2006-11-28 | Wabtec Holding Corp. | Automatic parking brake for a rail vehicle |
US7493994B2 (en) * | 2004-12-16 | 2009-02-24 | Bendix Spicer Foundation Brake Llc | Spring brake actuator with mid-located spring |
WO2009144863A1 (en) * | 2008-05-29 | 2009-12-03 | ナブテスコ株式会社 | Brake cylinder apparatus and brake caliper apparatus |
US8082645B2 (en) * | 2008-12-08 | 2011-12-27 | Wabtec Holding Corp. | Rotary manual release |
DE102019113930A1 (en) * | 2019-05-24 | 2020-11-26 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Brake cylinder with a locking device for mechanical braking force locking |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3070389A (en) * | 1956-09-14 | 1962-12-25 | Agfa Ag Fa | Structure for removable connecting a device to a support therefor |
DE1083675B (en) * | 1958-07-19 | 1960-06-15 | Zahnradfabrik Friedrichshafen | Steering lock for motor vehicles, especially for farm tractors and tractors |
GB1403653A (en) * | 1972-06-07 | 1975-08-28 | Ts N I | Vehicle brake actuators |
US3994206A (en) * | 1973-10-25 | 1976-11-30 | Svenska Aktiebolaget Bromsregulator | Device for discontinuing and automatically restoring the operational function of a spring brake actuator |
US4036111A (en) * | 1973-10-25 | 1977-07-19 | Svenska Aktiebolaget Bromsregulator | Device for discontinuing and automatically restoring the operational function of a spring brake actuator |
SE383997B (en) * | 1973-10-25 | 1976-04-12 | Bromsregulator Svenska Ab | LASEN DEVICE FOR SPRING BRAKE ACTUATOR |
US3918346A (en) * | 1974-07-11 | 1975-11-11 | Us Army | Frictional lock for retaining a rotatable piston against axial displacement |
SE392436B (en) * | 1975-03-03 | 1977-03-28 | Bromsregulator Svenska Ab | DEVICE FOR CANCELING AND AUTOMATICALLY RESTORING THE WORKING FUNCTION OF A SPRING BRAKE ACTUATOR |
SE402081B (en) * | 1976-10-11 | 1978-06-19 | Bromsregulator Svenska Ab | DEVICE WITH CONTROL VALVE TO CANCEL AND RESTORE THE WORKING FUNCTION OF A SPRING BRAKE ACTUATOR |
DE2646158C2 (en) * | 1976-10-13 | 1978-12-07 | Graubremse Gmbh, 6900 Heidelberg | Quickly releasable spring force storage device, especially for parking brakes of motor vehicles |
DE2800449C3 (en) * | 1978-01-05 | 1980-12-04 | Knorr-Bremse Gmbh, 8000 Muenchen | Snap release device for spring brake cylinders with damping device |
ZA80999B (en) * | 1979-03-06 | 1981-02-25 | Bendix Westinghouse Ltd | Spring force applying actuators |
DE2952205A1 (en) * | 1979-12-22 | 1981-06-25 | Knorr-Bremse GmbH, 8000 München | SPRING-BRAKE CYLINDER |
US4364305A (en) * | 1980-06-09 | 1982-12-21 | Wabco Westinghouse, S.A. | Brake cylinder device combining a pneumatically-applied service brake and a spring-applied parking brake |
NL8104001A (en) * | 1981-08-28 | 1983-03-16 | Doornes Transmissie Bv | TRANSMISSION, ESPECIALLY FOR A MOTOR VEHICLE. |
US4552056A (en) * | 1984-12-24 | 1985-11-12 | Wabco Ltd. | Manual release and automatic reset arrangement for spring-applied/air-released brake |
-
1986
- 1986-09-08 SE SE8603745A patent/SE454428B/en not_active IP Right Cessation
-
1987
- 1987-08-25 IN IN753/DEL/87A patent/IN169586B/en unknown
- 1987-08-27 US US07/089,851 patent/US4777867A/en not_active Expired - Lifetime
- 1987-09-03 ES ES87201662T patent/ES2014021B3/en not_active Expired - Lifetime
- 1987-09-03 AT AT87201662T patent/ATE51593T1/en not_active IP Right Cessation
- 1987-09-03 EP EP87201662A patent/EP0259924B1/en not_active Expired - Lifetime
- 1987-09-03 DE DE8787201662T patent/DE3762112D1/en not_active Expired - Lifetime
- 1987-09-04 BR BR8704619A patent/BR8704619A/en not_active IP Right Cessation
- 1987-09-04 CA CA000546185A patent/CA1301082C/en not_active Expired - Fee Related
- 1987-09-07 HU HU873987A patent/HU199736B/en not_active IP Right Cessation
- 1987-09-07 ZA ZA876668A patent/ZA876668B/en unknown
- 1987-09-07 SU SU874203363A patent/SU1508954A3/en active
- 1987-09-08 KR KR1019870009905A patent/KR960005844B1/en not_active IP Right Cessation
- 1987-09-08 JP JP62223198A patent/JPH086771B2/en not_active Expired - Lifetime
- 1987-09-08 CS CS649887A patent/CS274565B2/en not_active IP Right Cessation
- 1987-09-08 CN CN87106191A patent/CN1010470B/en not_active Expired
- 1987-09-08 AU AU78163/87A patent/AU585171B2/en not_active Ceased
- 1987-09-08 YU YU166887A patent/YU46877B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU7816387A (en) | 1988-03-10 |
YU166887A (en) | 1990-02-28 |
KR880004249A (en) | 1988-06-07 |
CS274565B2 (en) | 1991-08-13 |
ATE51593T1 (en) | 1990-04-15 |
EP0259924A3 (en) | 1988-09-07 |
AU585171B2 (en) | 1989-06-08 |
SE454428B (en) | 1988-05-02 |
CA1301082C (en) | 1992-05-19 |
HU199736B (en) | 1990-03-28 |
CS649887A2 (en) | 1990-12-13 |
YU46877B (en) | 1994-06-24 |
CN87106191A (en) | 1988-06-22 |
HUT47058A (en) | 1989-01-30 |
IN169586B (en) | 1991-11-16 |
CN1010470B (en) | 1990-11-21 |
BR8704619A (en) | 1988-04-26 |
SE8603745L (en) | 1988-03-09 |
DE3762112D1 (en) | 1990-05-10 |
SU1508954A3 (en) | 1989-09-15 |
ES2014021B3 (en) | 1990-06-16 |
US4777867A (en) | 1988-10-18 |
KR960005844B1 (en) | 1996-05-03 |
EP0259924A2 (en) | 1988-03-16 |
JPS6372926A (en) | 1988-04-02 |
SE8603745D0 (en) | 1986-09-08 |
EP0259924B1 (en) | 1990-04-04 |
JPH086771B2 (en) | 1996-01-29 |
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